Automatic receiver pump



July 10, 1928.

1,676,875 H. G. SHORTT AUTOMATIC RECEIVER PUMP Filed Dec. 17, 1927 3 Sheets-Sheet 1 ATTORNEY 1,676,875 H. G. SHORTT AUTOMATIC RECEIVER PUMP Filed Dec. 17, 1927 s Sheets-Shet 2 d4 J 243 A7 ATTORNEY July 10; 1928.

H. G. SHORTT AUTOMATIC RECEIVER PUMP 3 Sheets-Sheet Filed Dec. 17, 1927 ATTOREY Patented July 10, 1928. v 1,676,875 V UNITED STATES PATENT OFFICE.

HOWARD GRIFFITH SHORTT, OF CARTHAGE. NEW YORK, ASSIGNOR OF ONE-HALF TO STEBBINS ENGINEERING AND MANUFACTURING COMPANY, OF WATERTOWN, NEW YORK, A CORPORATION OF NEW YORK.

AUTOMATIC RECEIVER PUMP.

Application filed December 17, 1927. Serial No. 240,661.

My invention relates to certain new and sure to flow to one or the other expansion useful improvements in automatic receiver unit so as to effect a closing of the steam and pumps, and more particularly to that class exhaust valves. and their opening in proper of pumps exemplified in my co-pending apsequence, in order that the receiver may be plication for Letters Patent for automatic discharged of its aqueous contents when full receiver pumps. filed Nov. 18, 1926. Serial by introducing high pressure steam there- No. 149.159. and my other copending appliinto against said contents'and may be recation for Letters Patent. for automatic relieved of such steam or water-expelling presceiver pumps. filed April 8. 1927, Serial No. sure when the receiver has been emptied of 0 181,950. its aqueous contents to permit it to immedi- Such pumps are designed chiefly for hanately fill up again. all in regular. serial. autodling high temperature condensate. boiler matic alternation. And the invention may feed water and the like; being adapted for also he said to consist moreover in numeruse with air. steam. water. gas and all other ous details and peculiarities in the conkinds of gases. fluids and liquids; the device struction. arrangement and combination of serving in connection with a steam condenparts. substantially as will be hereinafter sation plant. a hot water heating system. a described and claimed.

water distribution apparatus. or other mech- In the accompanying drawing illustrating anisms having similar purposes. my invention:

20 The present novel means are applied in Figure 1 is a front elevation of my imconnection with a. single receiver. tank or proved automatic receiver pump, with cerreservoir: and a single control valve of the tain parts insect-ion. slide valve type actuates the high pressure Figure 2 is a vertical section of the same steam inlet and exhaust valves of the rein a plane through the central control valve ceiver. said ontrol valve being arranged in at right angles to the front view of Figure conjunction with a pair of expansion bellows, l. and taken on line 2, 2, of Figure 1. diaphragms. chambers or units. so as to iu- Figure 3 is a view showing a side eleva troduce pressure thereinto in alternation. so tiou of the valve mechanism, with the rethat one bellows may actuate the high pro ceiver or tank in longitudinal section.

30 sure steam valve to close the same. and the Similar characters of reference designate other may actuate the exhaust valve to (lose corresponding parts throughout all the difthe same. said valves being arranged to open terent figures of the drawing. alternately under the action of steam again t A tank. receiver. reservoir, or receptacle them when the closing pressure is relieved. of any kind. is denoted by A. Said re- 35 \nd it is found most effective to provide an reivei' may be mounted on a base A. This operative relation for the steam and exhaust receiver may be of any size. shape. design valves such that at the receiver-discharging or character. and ma) be taken by way of period the exhaust valve will close before example as arranged with a steam condensaihe steam valve opens. and at the receivertion plant. The water of condensation flows lilling period the steam valve will close beinto the receiver A through the opening a;

lo e the exhaust valve opens. so as to prevent and at the proper time when the receiver is steam fr m blowingthrough. lhus l profull the water is discharged from the tank vide a no el and ingenious disposition and through the same opening (1.. Suitable vonstrucfi n vi the t ain and ventvalvcs check valves (not shown) are arranged in 45 for the receiver. .0 that they may he sepaconnection with the intake and discharge ately closed by means of pressure-actuated ystems connecting at a? for example t diaphragms; together with automatic dethe pipe 0 which enters the receiver and has vices in the receiver controlled by the level the opening a in the end thereof. The R P of the water therein for positively operating a may be curved as shown so as to bring the control valve and causing it to allow presthe mouth a quite near the bottom of the tank and establish an ell'ective vvater seal. The automatic pumping of the. receiver is accomplished through the agency of high pr css uie-steamQvhi h veptersstht; top of tank A threu'glLthe inlet port 'Ffafter the tank has been completely filled up with st in, 17 19lQUIQ KUCU. eam Pr ss gaiii tthfljvatei"whe he nk. i t l the function of ejecting the water through the combined inlet and outlet passage at steam is vented to the atmospiere or elsetop side. and a short stem 52 on the other side. and the valve is contiguous to port (1' and functions in relation to a seat 57. Valve. 55L has a long stern.,'7,..o n the upper sidefand a-shortt'stem. 55.1611 the other.- side, and this valve is contiguous to port (I an-l functions in relation to a s eat 53 8. V p I The Steam dmis i n valve 1. i Ce i a the left 3I 1 rece ver "h di f See Figure 1', and'the steam vent'valve 54+; slip and after this is done th e expelling ponted,at the.right hand on receiver head B, see Figure l but of course this arrange dischargmon venbing ponluhhfon-thetenhaiust steam! aften' itthasl ,beenuusecliilnexpelling; ltyl'ke water, the same liavigng anw outletlwpor-tp'f through m'v' hieh the! iQXlIfiUSbuStEMUniS :passed from the port C to atmosphere hyymenms'ot'i a steam exhaust or;--vent\-valve.: Thei-ports G andi Dumenge; togethentinttoa the :un ionsport li which connects themnbothwitln-tahe Iit QTi eeisaer POltvE-g ,thnou'ghqwhich at; one,- time live 11 i gt pressure :Stfitll'fl from port: D entersthotrec'eiver and atl-iitnothentime the exhaust: or used steam is allowed ton escape\ into ventvponti C all 'asuI shallfully describe in detmil, Obviously-when steamtifrom the boiler unden bQilQL'. pressure-enters pout- 1).

' to-tillv the reoei-velvit. \v ill also fill, port-(l but. it-.- wi llnotwpaaswto atmosphere. QH-ZQX". haust steam until theivetnt ;val-\ae-.'opens-to allowwallrthe. st-eami-used lib/the) time in the reteiven-to ve'ntto' atmosphere afterthmhieh pressure .-\'2lh&'ll8,S:ClOi36dzt I I: :will-first-- describe :tltei inlet; land outlet valves-fort admitting live Or-high"-pi'essure steam-.to thereceiver when it: isfull of; waiter and-tordisposing ofsuchsteam when the. ieeeivetriis empty; of: wateu atteuits-ejebtion. These; two val es-are quite similar-in -onstruotionand arrangement; 'lhey-mreelosed' separately by the action of a prcssureoperaitedmechanism directedlbva' control A'al-ve: and theyrare :bothiopened' separatel '--by. theaetiou ofsteam-or other pressure in liftingthem at the 'timeithat-the closing; pressure has beenreleasedwor reduced-h 51 denotes the high; pressure-steam-,iniletivalvexand: 5t denOtes-thehsteam exhaust:

valve. Valve 51 has a long, stem 49 on tl e hered to. but any other arrangement may be adopted totseuve the samepurposes.

Steam inlet vahve 5,1 hasuneasingrtl lpthap is bolted at 34i -0notherwise sequrfitlmto; head" Bl ---\/Vithinrthe easing fitt ithehuertt calliyymovablelvalue-51 is arranged in relar. tio'n-to itsnseat; 57- withrespee t to which -it playsvbaek'and torthland controlsnommuni cation between a lowen chambentil in casing tal/and an upper chamber GQgim-said-icasing The lower chamber 61 is provided with; a steam inlet supply f casing 34, which noZLloallows oonneo. tion \vith'a pipe conveying highpressure steam fronrthevboilor; orusome other point l-tlHtlKLSLGRm; linotto ohamher 61. below. valve 1,;from which-chamber the,val-vefiLwhen,

lifted by the high pressure Ofn't-hQ steam delivers steam into. uppen chamber-P62 wherein is port at so than steam-\ -mtiy pass, out thrquglnthis port. ddnto thenlomg port Diand];thenee-into-u'eeeiver A.- Casing Z-lt. has aeoven ll-fillOliQ-(lv-Olflsecured thereonand fashioned wj'tha bearing: tor-the upper valve-sten'i 49,ivhich is;suitia bLy'-i1 ael e-'l at. 46 where it emerges jtrom its. bearing-,- a, serewwap 4%. :being used to make m-tight joint-abovesaid bearing; The lowe y-val-ve stem 52 belmwvalve 51-slidesiin-a short reeessuindower endiiofcasingfir Thus the. chamber (it below waive 51 1s constantly. illed with live steam \YhlQhgllft-S: anduopons. the valve to allow steamuto pass-footwe- Whenthe] mechanism-that holds the valve to-its; semtateertmin fithethtimes releuis sits hold for-wthei time 'be ing and-permits the alr-eto open The outlet orexhaust valve-fi l fOF-tlltzlOW pressuresteam after it has.-done.its work; in thewreceiver of ejeding. the content-suit quite similarin monstruetion and: operation tmthe, live. stean-i valve. 51 just. de rihed. hasa easing flfi that is bolted-at o l; "m t erwise screwedto head. Pniniwhich-casing is he. valve 54 which is vertically movable. withlrela ionrztovits seat 58 with.-respuct to whieliritqplays baclvand forth and -'xon rolt ommunication betweenm lower chamber. nil n casinig 35 'aniduamupper-ehamben-53 in said casingw Tlreuipper ClHLHIhFD rG-WJSaPYQ:. ided with anoxzle-EG on sideiof easing, 351 to which may be c nnected a pipe for carry pipo-noz zle -fidon side 1 Hit) lift) ing otl the exhaust or vented steam or to allow venting directly into the atmosphere. From this chamber 53 thevalve 54 when lifted by the pressure of the exhaust steam under valve 5&1. in chamber (3 delivers to outlet 56. In chamber (33 is port r through which the exhaust steam is deli ered from receiver through long port C into chamber 63. Casing has a cover 12 secured thereon and fashioned with a bearing for the upper valve stem 47 whi h is suitahlv packed at where it emerges from its bearing. a screw cap 46 beingused to make a tightjointabove said hearing. The lower shortvalve stem below valve 54 slides in a short. guiding recess in lower end of casing 35. Thus the chamber 63') below valve 54 is constantly filled with steam pressure. through port 0. which lifts and opens the valve 54 to allow exhaust steam to pass out to atmosphere when the mechanism that holds valve 54 to its seat at certain times releases its hold for the time luring. In the. operation and functionin; of the e steam and exhaust valves it will he noted that the steam inlet valve closes tightly before the steam outlet valve opens. and conversely.

I pass now to des'rihe the c ntrol valve wh ch controls the pressure which operates the steam inlet and outlet va ves I have just described. through the medium of expansion members. This is clearly shown in the sectional view in Figure 2: while the connecting pipes and other parts are delineated fully in Figure 1. 1 denotes a. cylinder or casing which is etl'ectivoly supported on receiver head B by any suitable means. Within this casing or cylinder 1 is a. close-fitting bushing 7 wherein slides up and down vertically a slide valve 8. This valve is a. block having a long lateral port 9 on one. side. and on the opposite side having ears ($5. to which a. flat spring 19 pivoted. the ends of which spring bear against the bushing and are. closely tensioned so as to hold the valve 8 tightly against its seat on the. bushing. The cars (35 straddl the section 20 of valve rod 16 between he collars 17 and 18. the distance between which collars is longer than the vertical length of valve 8 so as to allow plav and permit the rod to move freely up and down. at one time shitting the valve downwardly and at another shifting it upwardlv. these movements of the valve openin; and closing certair ports as I shall speifv. but: the valve l m has considerahlijup and d wn nrn'emen \=.ithoutaltectin; the valve for when he float: s dropping he valve stem will lift more or less without moving the valve. but when collar 18 strikes the valve 8 it will lift it to its upper position which may he termed the tilting position: and when the float is rising it will pull down the. valve stem more or less without moving the valve 8 until the collar 17 trikesthe valve and moves it down into its ower position which is called its discharge position.

The upper end of cylinder 1 is closed by a screw phi; 5, having an inner central r cess h-t. that re'eivcs the upper end 66 of valve rod 16 and guides thesame during its rcciprocat0r movement-s. And the low r end of cylinder 1 closed by a screw cap (5, through which therod 16 passes. said rod being packed at this point by suitable packing held in place by a gland 21 which secured by a rewed cover The cylinder 1 is tilted with steam. air. or other pressure. through a pipe l which enters the wall of the cylinder and delivers into the interior of the. cylinder through port 67 in bushing 7, said pipe. 4 running from some suitable source of fluid or liquid pressure as-a steam boiler or other power. In the wall of c vlinder 1. are three ports 13, 14, and 15. whichcoincide respectively with three contiguous ports 12, 11. and t(). in the bushing i at seat of slide valve 8. Ports' t1 and 14 constitute an xliaustoutlet through which exhaust pressure fhiids exit into pipe 36 which discharges into the atmosphere or elsewhere. 'lop ports 10 and 15 lead into pipe 40 which runs to the bellows or diaphragm that actuates the exhaust valve 54-: and bottom ports 12 and 13 lead into pipe 3-3!) which runs to the bellows or diaphragm 2 that actuates the live steam valve 51. l-Vhc-n the. slide valve 8 is in its upper or filling position as shown in Figure the passage 9 in the slide, valve will connectport. 10 with the exhaust outlet at port 11, or in other words the vent-valve operating bellows 3 will be connected with the. discharge: while at the same. time the. port 12 will he uncovered by valve, S and full operatin pressure will he passing into steam-valve op(. .i'atin; diaphragm -"hc-n the valve b is shifted however from its upper to its lower or discharge position. its lateral port 9 will connect port- 12 with exhaust port 1t. at the same time uncovering the upper port it). so that steau'i-valve operatingpressure from the interior of diaphragm 2 will pass to the discharge. while vent valve operating pressure will flow out. of the. interior of cylinder 1 into ports 10 and 15 and on into the diaphragm 3. whose function is {0 close the vent valve.

The two diaphragz'ms 2 and 3 are hollow expansion nu-mbers. like an expansion joint, and mav he like a bellows or similar corru- $:at'. -.l or accordion-like. expansiblc means of flexible thin steel or other suitable material that 'r-r ll provide an expansihle chamber. whose expansion will occur when it is filled with air. steam. or other pressure, and which w ll contract when the. pressure is released from the interior of said expansible chamber. One of these corrugated bellows. as 2 is entered by pipe 39,111-(1 it is supported in afraine 37. mounted on the live steam valve casing 2-54. or the bearing head 41. The lower end of bellows 2 has a block 50, provided with a pocket to receive loosely the upper end of a steam-valve. stem 49. Thus the valve stem 49 is separate from the bellows 2 that depresses it at certain times to close the valve. The other corrugated bellows. as 3, is entered by pipe 40, and it is supported in a frame 38 mounted on the exhaust valve casing 35. or hearing head 42. The lower end of bellows 3 has a block 48 provided with a )(Kfkkb to receive loosely the upper end of vent valve stem 47. Thus the stem 47 is separate from the bellows 3 that depresses it at certain times to close the valve. These bellows or diaphragms 2 and 3 have an area in theinterior ends which carry members lS-and 50 that bear a certain ratio l'o-the faces of valves 51 and 54 that are exposed to pressure beneath, said bellows a es. being several times the area of the valves. so as to regulate the opening and closing pressures as will be afterwards more fully set forth. Thus we have expansion units for closing the valves. the same. being a--tuated by pressure entering same from the control cylinder and governed by the control slide valve.

The receiver head B may have any desired form. size and shape. so that it may be con venicnt for disposing thereon and therewith many of the features of my invention. Thus it has a proturberant front portion 26 ending in a box-shaped member forming part of the receiver. see Figure 2. and connecting therewith through an opening 28. which accommodates the movementof a rearwardly extending bent rod 27 which carries a float tlr. so that-as the float rises and falls due to the change of the water level it will move the rod '27 up and down. The front end of the projecting box member has an opening covered by-aplate 30. removably Secured by means of bolts 31. The rod 27 is connected to a short horizontal shaft 29 which is supported in hearings in the projecting part 26, and has external retaining nuts 59 on the opposite ends: and the end rod 27 is cleft or slotted at. to engage a horizontal pin 32 in the lower end of the vertical valve rod 16 belonging to the control valve. This rod. alread above described. projects below the cvliedcr l and enters the enlarged member i through a screw plug 25 which is screwed into member 2(3. The plug 2-?) carries a hearing for this rod. which is tightly packed b suitable means held in place by a gland 2i covered by a screw cap 23. The lower end of rod 16 has a threaded section and nut thereon to regulate its effective length. as shown.

When the tank is full of Water and the float G has risen to the top. the lever 27 will have pulled down on the valve stem 10 so that collar 17 will have descended and engaged slide valve 8. with the effect of drawing); down said valve into discharge. position until its port 9 unites the ports 12 and 1.3 with the exhaust ports 11 and 14, at the same time opening ports 10 and 15 to receive full pressure from interior of cylinder 1. This operation of the slide valve therefore empties high pressure steam valve bellows 2 and thus allows the steam valve 51 to lift and open because of the steam pressure under it. so that live steam will pass through port D to the receiver on top of the full aqueous contents of the same, expelling such contents through opening a; while at the same time the opening of ports in and 17 to receive the full. pressure in cylinder 1 will cause such pressure to expand vent valve bellows 3 and thus tightly close the ventvalve 54. Vent valve will close before steam valve opens. Now as the live steam forces the water out of the receiver thc float drops and through action of the lever 27 the control valve stem 16 rises. \Vhen thc receiver is empty and the rod 16 has lifted far enough to raise the control valve v to ts high or filling position, as shown in Figure 2. the ports 12 and 13 will be opened to receive the full pressure of steam or air in the control cylinder 1. and the ports 10 and 15 will be connected with exhaust ports 11 and 1.4, so that pressure in ventvalvc expansion bellows 3 will escape. The contraction of bellow 3 will allow an opening of the vent valve 54 and allow the steam that now fills the receiver to exhaust to atmosphere. while the simultaneous expansion of the bellows 2 will close the live steam valve 51 and prevent any more high pressure steam from entering receiver A at this time. Steam valve closes before vent valve opens. Thus the receiver being now discharged can again refill with condensation or other water. And these series of processes will repeat themselves as fast as the receiver fills and then pumps out its contents. the operation being wholly automatic.

This is the general character of the operation. but it is necessary to describe the same in somewhat greater detail than this. because lo obtain the best results it is essential that at th discharging period when the valves arc put in position for the discharging oper ation. the vent valve should close before thc h gh prcssuro valve opens. ard at the filling period when thc valves are put in position r thc illiut'. operation. it is essential that lic high pressure steam valve should close before the vent valve opens. for this sequence of operation eliminates the chance of any blowing through in the different positions.

Referring again to Figures 1 and 2 it will be noted that the valves and receiver are all in the position taken when the receiver is ill) being filled. The control slide valve is up, that is in filling position, the float is in the bottom of the receiver, the receiver is empty of water but full of steam that has just entercd, the vent valve is open to atmosphere, the steam valve is closed, the vent valve bellows is contracted. the steam valve bellows is expanded, that the high pressure on vent valve bellows is-being vented to atmosphere through action of float-controlled slide valve, and at the same time the high pressure in control cylinder of say 125 pounds is being applied to the steanr valve bellows, holding steam valve closed against the hi h pressure steam coming through pipe (it). For example we will suppose that the high pressure under steam valve 51 is now 125 pounds, and the receiver pressure under vent valve '4 is practically zero pounds, or only enough to lift the vent valve when the bellows 3 contracts.

Now the float at once begins to rise as the water flows into the bottom of'the receiver and float continues to rise as receiver continues to fill. Of course, the rising of the float reverses the direction of movement of the stem of control valve 8 and when the collar on it strikes valve 8 it proceeds to drop. or to assume discharge position, and as soon as ports 10 and are opened a pres sure of 125 )ounds will be applied to the vent valve bellows. There being practically no pressure now except receiver pressure under this valve a building up of a few pounds, say six pounds in vent valve bellows will close the vent valve, whereas the pressure in the high pressure valve bellows must vent down approximately 22 pounds before the 125 pounds underneath this high pressure valve can force the same open due to the difference in areas between the valve and the interior of the bellows. This assures us that the ventvalve will close first, or before the steam valve opens to admit steam to the receiver to eject its full contents.

Now when the action is reversed, and the (mptying of the receiver again causes the float to drop and the slide valve again finally to lift again, the vent Valve bellows must vent down to about 12 pounds, due to discharging pressure in the receiver which is never over pounds, while the high pressure valve bellows is building up to 23 pount so that it readily perceived that the high pressure valve will close before the vein valve opens, so that everything may be in readiness for the filling operation again. I'll-nee just before the beginning of the discharging period when the receiver full the win valve closes first and the steam valve o ens next, in this sequence; and when the receiver empty through the action of the steam on the contents so as to start filling again the steam valve closes first and the vent valve opens, in this sequence. That is during receiver-water discharge the steam valve is open and the vent valve closed; during receiver-water filling the steam valve is closed and the vent valve open. And betel--- the discharge begins the vent valve ClOSe: before the steam valve opens; and before the filling begins the steam valve closes beionthe vent valve opens.

The difference in the effective areas of the bellows and the valves operated thereby controls the time and sequence of the closing of the valves. Obviously the bellows area will always be greater than the area of the valve which it actuates. but the ratio between the bellows and valve areas may vary "cry widely to suit different conditions, and I do not wish to be limited. The pressures may all vary within wide limits, in so far as it may be necessary to secure the best results in closing the vent valve before the steam valve opens and in closing the steam valve before the vent valve opens.

A further feature that is novel and useful is shown in Figure 3 and consists of a resilient buffer for the float G, which absorbs the shock if the float G drops so quick- 1y as to violently strike against the bottom of receiver A, or against the top of same should it rise too suddently, for such a sudden blow of the float against a solid wall might damage the valve mechanism. I avoid such a possibility by encircling the float (i by an elliptical or oval spring steel band To which isspaced about the same distance from float G all around it and is su ported by attachment to. the float arm 27. i vhile a single flat oval member of this kind, mounted in a vertical plane, will effectually protect the float by striking elastically any object to ward which the float moves. and thus pre vent the solid impact of the float against the receiver walhyct if desired I can have more than one, several if desired, in different planes, vertical. horizontal. or angular.

A mode of mounting the spring shield at one end of float G, as on the arm 27. con sists in having the hollow end of said arm tilled in with a block 79 driven thereinto. ()n the end of arm 27 is a flanged casting 71 having a tubular socket 712 that receives the end of arm 27, which is secured therein by taper pin 73 or other suitable means. Also casting 71 has upper and lower flanges 78, and on the side opposite the socket 72 is a round projection 76 that enters a tubular socket 81 in the end 74 of float G. Moreover this socketed end of float G is flanged up and down at 77, said flanges being secured to the flanges 78 by means of rivet T5, the ends 80 of spring 70 being held tightly between flangcs 77 and 78. Other means for mounting the elastic shield may be devised.

hat I claim, is:

1. In an automatic receiver pump of the vfboth centrolling a mm'o'n passage 10 into the receiver, connections bet'iveen the ce fi trol valve andthe steain' inlet and outlet valves sai d corinections ir cluding expan il le thelilbBIS whli ch "eiipa nd to close the steam inlet and outlet valves and contract to allow said'va l'ves lto ope-n,' so that when gthe control fvalve 1S actuated in one direction the steam inlet v alve vi'ill b'e opened and the outlet valveijcl o sed, ,ianfd yvlien .:thc"0n trol valves actuated inf thei opposite direcout are finlet alve 'vvill' be, closed nd the outlet valve opened; I

class described, the combination of a liquid valve aud ts cylinder, buoyant member in thefreceiver, means \v 'here'by the buoyant member positively and automatically actuates said control valve, ai ste am inlet valve 1 for the receiver ha ing stem, a steam' out- :io let valve foiythereceiv er having a stem, both valves Conn-omega common 'pasSage into the I receiver," an eztpansible and cori ti'actible member enga ing the steam valve stem to close said vaiv e at timesand I allow it to 8 open at other times, another ex'pari'sibleand contractible member engaging the steam out let valve stem to close said valve at times and to allow itt o: open at other times,'c'onnections bettveen the eont-rol'valvc cylinder to and the said expansible and contractible members for conveying/pressure to expand said members and to exhaust said pressure to permitthem to contract vvhen the pressure is released, andan eshaust for the control valve cylinder, an arranged so that when the control valve occupies one position the steam inletvalve will beopened and the outlet valve closed. and when the control valve occupies another position the steam inlet valve will be closed and thesteam outlet v alre opened. 7

3. In an automatic receive'rpump ot the class described, the c'c jmbination'of a liquid receiver having an inlet and outlet, a contro l valve and its cylinder, saidvalve consisting of a slidingport-provided block, a buoyant member in the receiver, means whereby the buoyant member positively and automatically actuates saidcontrol valve to cause it at one time to occupy the discharge position and at another time to occupy the filling position, a steaminletvalve for the receiver, a steam outlet valve forthe receiver, both controlling a common passage into ta t he receiver, an exhaust outlet to'rthe'conreceive havingan inlet andoiitlet, a' control trol cylinder, connections between the core trol valve and the steam inlet and outlet valves, said connections including ezipam sible members actingto close and open said inlet and outlet valves, accordingly as the control slide'valveis actuated in one direction or the other. I

4. In an automatic receiver pump of the classdescribemthe combination ofa liquid receiver having an inlet and an'outlet, a

control slide valve and its casing, a buoyant member in the receiver", ineanswhereby the buoyant n'iem'ber positively and automaticallyactuates said control valve, an exhaust outlet. tot-the controtcylinder, a steam inlet' valve for the receiveiza steam outlet valve for the receiver hoth cont'rolhn a common 3, H; 1.. passage into the receiver, an 'XptlIlslOn unit aetingfto' close thepteam'valve atone t'irne and allowit too'penunder pressure at an-" other time, a second expansionunitactingto close tlie'oiitlet valve at one time'andallow it to' open tinder pressureat another time,

leans for conveying pressure fromthe control valve casing to the expansion units and foi'"e:thausting such pressure through the ekhau'st'outl'et, said means being controlled by the control valve, so that when the control valv is actuated in one direction the steam iJ'l etvalveWvill he opened and the outlet valve closed}, and \vhen thecontrol valve is actuatedin the opposite direction" the inlet valve \villbe closed and the outlet valve opened.

5.111 an aitt-oi'natic receiver pump of the" class 'des'cribed, thecombina'tion of a liquid receiver having an inlet and an outlet, a control slide va'lveand its casing, said valve having a st cm proi ided with collars that 'contact with and move the valve, said col larsl"b-eing spaced further apart than the length of the valve to give the rod a certain amount ofmovement Without moving the valve, a float in the receiver, a lever connecting the float with the valve stem to actuate the latter, an exhaust outlet for the -vaive casing, a steam inlet valve for the receiver, a steam outlet valve for the receiver. both controlling a common passage into the receiver, an expansion unit arranged to close the steam valve, another expansion unit arranged to close the outlet'valve, means for conveying pressure from the control valve casing to the expansion units and for exhausting such pressure through the exhaustoutlet, said means controlled by the control valve, so that when the said valve is actuated inone direction the steam inlet valve will he opened and the outlet valve closed. and when the control valve is actuated in the opposite direction the inlet valve will be closed and the outlet valve opened.

a 6. In an automatic receiver pump of the class described, the combination of a liquid receiver 'havingnn inlet and outlet, a con-"- trol slide "valve and its"casing,- sa'id valve having a stem loosely connected with the valve so as to'have some play without moving the valve, a float in the receiver, a lever connecting the float with the valve stem, so that the rise and fall of the float will shiftthe slide valve from discharge to filling position and the reverse, an exhaust outlet for the--co'ntrol casing, asteaminlet valve foi the' receiver, a steam outlet-valve for the receiver, connections between the control valve and the said: inlet and outlet valves including pressure-operatedbellows that expand to close thevalvesand'eontract to allow them tolopemsothat when thecontrol valve is=lifted intoj-filling position the steam valve willtilosc and' the outlet valve open in this sequence, and'j w'hen the control valve is loweredto tl'isohirrge' position the outlet valve will'be close'c'lfand the steam valve opened in this-sequence: w

"ZrIn an-automatic receiver-pump of the classdescribed,"the-combination "of'a liquid receiver" having an inlet-and outlet; a control 'slide'i'alveand its 'CEISIIIgyS EL'IdValVG having a stem p'rovided with collars that contact with the-valve above and below but are spaced further apart than the length of the valve to give the rod some movement Without moving the valve, a float in the receiver.

means connecting the float with the valve stem, an exhaust outlet for the valve casing, steam inlet and outlet valves for the receiver, having stems, expansion bellows loosely engaging said stems, means for conveying pressure from-the control valve casing-to'said bellows and exhausting it in the exhaust outlet, so that when the bellows expand the valves will close and when they contractthevalves will be. allowed to open, all arranged so that when the float lifts the control valve into iilliug position the steam valve will close and the outlet valveopen in this sequence. and when the float depresses the control valve intodischarge position the outlet valve will close and the steam valve open in this sequence.

8. In an automatic receiv r pump of the class described. the combination of a liquid receiver having an inlet and outlet. a control slide valve and its casing. said valve having a stem provided with upper and lovver collars spaced further apart than the length of the valve. :1 float in the. receiver means connecting the float with the valve stem. an exhaust outlet for the valve casing, steam inletand outlet valves for the rrceiver. stems for the said valves. bellows engaging said stemsavhich bellows expand close said valves and contract to allow than to open. pipes for carrying pressure from the control valve casing to the bellows. said pipes having ports controlled by the control valve which at one time in one position admits high pressure to a pipe running to one bellows and simultaneously connects the other pipe to the exhaust, and at another time in another position admits high pressure to the other pipe running to the other bellows and simultaneously connects the other pipe with the exhaust, so that the float-actuated control valve will. open and close said steam and outlet valves to automatically pump the Water out of the-receiver. 9. In an automatic receiver pump of the class described, the combination of a liquid holding receiver having an inlet and outlet, a head for said receiver having a pair of ports merging into a common passage into the receiver, one port to convey live steam to the receiver and the other to vent it from the receiver, a steam valve to deliver live steam to the steam port through an inlet.

port, a vent valve to allow exhaust steam to vent from its port through an outlet port. a casing for each valve containing steam pressure against the valve which opens the valve when closing pressure is reduced, expansion units that act against the valves with a closing pressure and contract to relieve said pressure to allow the valves to open, a float actuated control slide valve and its casing, means for conveying pressure from the control casing to the expansion units, and an exhaust outlet for the control casing 1 10. In an automatic receiver pump of the class described, the combination of a liquid holding receiver having an inlet and outlet! 2 head for the receiver having ports merging into a. common port into the receiver. one port to convey live steam to the receiver and the other to vent steam from the receiver, a steam valve to deliverlive steamto the said steam port, a vent. valve to allow exhaust steam to vent from the vent port. a casing for each valve containing steam pres sure against the valve which opens the valve when closing pressure is reduced. expansion units that act against the valves with a closins pressure and contract to relieve said pressure to allow the valves to open. a control slide valve and its casing, a stem ther for having collars thereon to engage the valve above and below. and collars being spaced further apart than the length of the valve. a float. a lever carried there ra and pivoted to the valve stem. :1 fulcrum for the lever, means for conveying pressurifrom the control casin to the expansion units. and an exhaust outlet for the control casing. all operating so that when the tloai places control valve in filling position the steam valve will close and the outlet valve open in this sequence. and when the floa places control valve in discharge position. the outlet valve will close and the steam valve open in this sequence.

11. In an automatic receiver pump of th;

loo

llit) class described, the-combination of aliquid holding receiver-having an inlet and outlet and ports merging into a common passage into the receiver, one port to convey live steam into the receiver and the other to vent it from the receiver, a steam valve to deliver live stearu'to said steam port, vent valve to allow exhauststeam to ventfrom the vent port, said valves having valve stems, a casing or each valve containing ste-nn pa sure againsbtl e valve whichopcns .he valve when closing pressure isreduced, expansion units that .ni against the valve ;-tems 'Yv llll a closing pressure-and contract: to'relieve said prt sure to allow the valves to open. .said unns laiingi'af greater area than the valves. ha "rug lower pockets to l .=o.- .-l v-en' gage theiuppcr ends of the valve seems. a floater-titrated control slide valve and its casing, moans 'lorconve ing pressure from the. coritrobcasing to the ex-panf units. land an-cxhaustoutlet tor the control casing.

12. In an automatic receiver pump of the class described, the combination of a liquid holding receiver having an inlet and outlet, and ports merging into a-connnon passage into the receiver, one port to cont-"e live steam into the receiver and the other to vent it from the receiver, a steam valve to deliver live steam to said steam port, a vent valve to allow exhaust steam to ventfrom thevent port, a casing for the steam valve having a chamber receiving live steam from a supply. a chamber having an outlet into the receiver port, and a seat intermediate of the chambers on which the steam valvefunctions. a casing for the ventvalve having a chamber with a discharge out-let, a chamber with a port through which the receiver vent port deli\ers. and a seat intermediate of the chainberson which the vent valve functions, each casing containing steam pressure flgkllll l the valve which opens the latter when closing pressure is reduced, expansion units that act against the valves with a closing pressure and contract to relieve said pressur to allow the valves to open. a float actuated control slide valve and its casing. means for conveying pressure from the control casing to the expansion units. and an exhaust out-ct for the control casing.

13. In an automatic. receiver pump of the class described. the cmnhination of a liquid receiver having an inlet and outlet. a control valve and its c \'li;,d@r. a lloat in the receiver. a lever on th Heat to actuate the control valve, an exhaust outlet for the control cylinder. a steam inlet valve for the receiver. a steam outlet valve for the receiver. ooth controlling a common passage into the receiver. ('()'.1!'\5Cll0!l.\ between the cont rol valv and the steam inlet and outlet valves. said connections includin; expansihle members wh expand to close the valves and contract. to-

tnne to occupy allow them toopen, all arranged so that wheat-he floatlit'ts the control valve into filling position the steam valve will close and the outlet, valve open in this sequence, and when the float depresses control valve into discharge position, the outlet valve will close and the steam valve open in this sequence.

14-. Inan antomaticreceiver pump of the class described, the combinationof a liquid receiver havingan inlet and outlet, :1 control cylinder-having a high pressure inlet, an ex haust-ontlct, and a pair of high pressure outlets, a sliding control valve having a lateral port which functions with said outlets, a-stern for said valve having collars; that engage with and move the. va.lve,-a float in thef receiver. means connecting the float with the said valve stem, to cause the valveatone the discharge position and-at another time to occupy the filling position, a steam inlet valve for the receiver, a steam out-let valve. for-the receiver, both controllinga common passage-into the receiver, expansion diaphragms acting to close the.

-valves when expanded, pipes connecting said diaphnagms with the control cylinder to convey pressure at times and-exhaust at other timesaccordinglyas the control slide valve is actuated.

:15. In an=automaticreceiver. pump of the classdescribed, the combination of a liquid receiver havingan inletfiandoutlet, a control valve. and its cylinder, a float in the receiverprovided with-an elastic shield. alever on the floattoactuate the control valve, an exhaust outlet for the control cylinder, :1 steam=iniet valve for the-receiver, a steam outlet valve for the: receiver, both controlling a common passage into the receiver, connections between the control valve and the steam inlet and outlet valves, said connections including expansible members which expand to close the valves and contract to allow them to open, all arranged so that "when the float lifts the control valve into tilling position the steam valve willclose and the outlet.- valve open in this sequence. and when the float depresses the control valve into discharge position. the outlet-valve will close and the stean'i valve open in this Sequence.

16. In an automatic receiver pump of the class described. the combination of a liquid receiver having an inlet and outlet. a core trol cylinder having a high pressure inlet an exhaust outlet. and a pair of high pressure outlets, a sliding control valve having a. lateral port which functions with said outlets. a stem for said valve having collars that engage with and move the valve, 21 float in the receiver provided with an elastic shield. means connecting the float with the said valve stem, to cause the valve at one time to occupy the discharge position and at another time to occupy the filling position, a steam inlet valve for the receiver, a steam outlet valve for the receiver, both controlling a common passage into the receiver,

-" expansion diaphragms acting to close the valves when expanded, pipes connecting said diaphragms with the control cylinder to convey pressure at times and exhaust at other times accordingly as the control slide valve is actuated.

In testimony whereof I hereunto affix my signature.

HOWARD GRIFFITH SHORTT. 

